Simple widget to show presence of VPN tun device

vpn.lua

@@ -0,0 +1,40 @@
+local awful = require("awful")
+local gears = require("gears")
+local wibox = require("wibox")
+
+local icon_vpn_noconn
+local icon_vpn_conn
+
+
+-- Create layout with widgets
+local widget = wibox.widget {
+   {
+      id = "icon",
+      widget = wibox.widget.imagebox,
+      resize = true
+   },
+   layout = wibox.layout.align.horizontal
+}
+
+gears.timer {
+    timeout = 10,
+    autostart = true,
+    callback = function ()
+        awful.spawn.easy_async_with_shell("ifconfig | grep \"tun.*:\"",
+            function (stdout, _, _, _)
+                if (stdout == "") then
+                    widget.icon:set_image(icon_vpn_noconn)
+                else
+                    widget.icon:set_image(icon_vpn_conn)
+                end
+            end)
+    end
+}
+
+-- Widget function that is available from the outside.
+function widget.set_icons(vpn_noconn, vpn_conn)
+    icon_vpn_noconn = vpn_noconn
+    icon_vpn_conn = vpn_conn
+end
+
+return widget